GENERAL
Page GENERAL-20
Z001019/0_7_January 2011
SERVICE MANUAL MARINE ENGINES
ToC
B
Specifications
B 1
Fuel Requirements
The STEYR Marine Engines are designed for maximum fuel economy. To maintain optimum performance use
diesel fuel according to CEC RF-03-A-84 or equivalent to meet this specification. When temperatures are below
-7° C (20° F), use diesel fuels with additives for low temperature operation.
How to Select Fuel Oil
Fuel quality is an important factor in obtaining satisfactory engine performance, long engine life, and acceptable
exhaust emission levels. Direct injected diesel engines are designed to operate on most diesel fuels marketed
today. In general, fuels meeting the properties of CEC RF-03-A-84 have provided satisfactory performance.
The ASTM D 975 specification, however, does not in itself adequately define the fuel characteristics needed for
assurance of fuel quality. The properties listed in the following fuel oil selection chart have provided optimum engine
performance.
Fuel Oil Selection Chart
ASTM -
Test procedure
D 613 (D 976)
D 1298
D86
D 93
EN 116 (CEN)
D 445
D 1266/D 2622
D 2785
D 130
D 189
D 482
D 95/D 1744
D 974
D 2274
General
Fuel classification
Cetane number
Gravity at 15°C (kg/l)
Destillation
50%
90%
End point
Flash point
CFPP (Cloud point)
Viscosity Kinematic 40°C
Sulfur content
Cupper corrosion
Carbon residue
Conradson number (10% residue)
Ash
Water content
Acid content (strong acid)
Oxidation stability
CEC RF-03-A-84
Limit value and
units
min. 49 - max. 53
min. 0,835
max. 0845
min. 245°C
min. 320°C
max. 340°C
max. 370°C
min. 55°C
min. -- / max. -5°c
min. 2,5 mm²/s
max. 3,5 mm²/s
max. 0,3 mass-%
max. 1
max. 0,2 mass-%
max. 0,01 mass-%
max. 0,05 mass-%
max. 0,20 mg KOH/g
max.2,5 mg/100ml
CEC RF-03-A-80
Limit value and
units
min. 51 - max. 57
min. 0,835
max. 0845
min. 245°C
min. 320°C
max. 340°C
max. 370°C
min. 55°C
max. -5°c
min. 2,5 mm²/s
max. 3,5 mm²/s
max. 0,50 mass-%
max. 1
max. 0,2 mass-%
max. 0,01 mass-%
max. 0,05 mass-%
max. 0,20 mg KOH/g
max.2,5 mg/100ml